{
  "page": "https://opencode.ai/data/stepfun/step-3-5-flash-2603",
  "updatedAt": null,
  "summary": "Step 3.5 Flash 2603 costs $0.10 per 1M input tokens and $0.30 per 1M output tokens.",
  "model": {
    "id": "stepfun/step-3.5-flash-2603",
    "name": "Step 3.5 Flash 2603",
    "lab": "stepfun",
    "labName": "StepFun",
    "family": null,
    "description": "StepFun flash model for efficient multimodal reasoning, coding, and tool use",
    "releaseDate": "2026-04-02",
    "lastUpdated": "2026-04-02",
    "knowledgeCutoff": "2025-01",
    "contextTokens": 256000,
    "outputTokens": 256000,
    "inputModalities": [
      "text"
    ],
    "outputModalities": [
      "text"
    ],
    "reasoning": true,
    "toolCall": true,
    "openWeights": true,
    "weights": [
      {
        "label": "Hugging Face",
        "url": "https://huggingface.co/stepfun-ai/Step-3.5-Flash"
      }
    ],
    "priceUsdPer1M": {
      "input": 0.1,
      "output": 0.3,
      "cachedInput": 0.02,
      "cacheWrite": null
    },
    "benchmarks": [
      {
        "name": "Artificial Analysis Coding Index",
        "score": 34.6,
        "metric": "index",
        "source": "https://openrouter.ai/stepfun/step-3.5-flash/benchmarks"
      },
      {
        "name": "SciCode",
        "score": 38.5,
        "metric": "percent correct",
        "source": "https://openrouter.ai/stepfun/step-3.5-flash/benchmarks"
      },
      {
        "name": "Terminal-Bench Hard",
        "score": 32.6,
        "metric": "success rate",
        "source": "https://openrouter.ai/stepfun/step-3.5-flash/benchmarks"
      }
    ]
  },
  "usage": null
}